code: def test_ensure_copied_data(self):
      # gh-12309: Check the "copy" argument of each
      # Index.__new__ is honored.
      #
      # Must be tested separately from other indexes because
      # self.values is not an ndarray.
      index = CategoricalIndex(list("ab") * 5)
  
      result = CategoricalIndex(index.values, copy=True)
      tm.assert_index_equal(index, result)
      assert not np.shares_memory(
          result._data._codes, index._data._codes
      )
  
      result = CategoricalIndex(index.values, copy=False)
      assert result._data._codes is index._data._codes
  
imports: import numpy
  import pytest
  from pandas._config import using_pyarrow_string_dtype
  from pandas._libs import index
  from pandas._libs.arrays import NDArrayBacked
  import pandas
  from pandas import Categorical, CategoricalDtype
  import pandas._testing
  from pandas.core.indexes.api import CategoricalIndex, Index
label_desc: Use image node_id 14 for calling the TestCategoricalIndex obj's underlying member method code with example usage: obj.test_ensure_copied_data() without return types